public class DenseObjectMatrix3D extends ObjectMatrix3D
Implementation:
Internally holds one single contigous one-dimensional array, addressed in (in decreasing order of significance): slice major, row major, column major. Note that this implementation is not synchronized.
Memory requirements:
memory [bytes] = 8*slices()*rows()*columns(). Thus, a 100*100*100 matrix uses 8 MB.
Time complexity:
O(1) (i.e. constant time) for the basic operations get, getQuick, set, setQuick and size,
Applications demanding utmost speed can exploit knowledge about the internal addressing. Setting/getting values in a loop slice-by-slice, row-by-row, column-by-column is quicker than, for example, column-by-column, row-by-row, slice-by-slice. Thus
for (int slice=0; slice < slices; slice++) {
for (int row=0; row < rows; row++) {
for (int column=0; column < columns; column++) {
matrix.setQuick(slice,row,column,someValue);
}
}
}
is quicker than
for (int column=0; column < columns; column++) {
for (int row=0; row < rows; row++) {
for (int slice=0; slice < slices; slice++) {
matrix.setQuick(slice,row,column,someValue);
}
}
}
serialVersionUID| Constructor and Description |
|---|
DenseObjectMatrix3D(int slices,
int rows,
int columns)
Constructs a matrix with a given number of slices, rows and columns.
|
DenseObjectMatrix3D(Object[][][] values)
Constructs a matrix with a copy of the given values.
|
| Modifier and Type | Method and Description |
|---|---|
ObjectMatrix3D |
assign(Object[][][] values)
Sets all cells to the state specified by values.
|
ObjectMatrix3D |
assign(ObjectMatrix3D source)
Replaces all cell values of the receiver with the values of another matrix.
|
Object |
getQuick(int slice,
int row,
int column)
Returns the matrix cell value at coordinate [slice,row,column].
|
ObjectMatrix3D |
like(int slices,
int rows,
int columns)
Construct and returns a new empty matrix of the same dynamic type as the receiver, having the specified number of slices, rows and columns.
|
void |
setQuick(int slice,
int row,
int column,
Object value)
Sets the matrix cell at coordinate [slice,row,column] to the specified value.
|
aggregate, aggregate, assign, assign, assign, cardinality, copy, equals, equals, get, getNonZeros, like, set, toArray, toString, viewColumn, viewColumnFlip, viewDice, viewPart, viewRow, viewRowFlip, viewSelection, viewSelection, viewSlice, viewSliceFlip, viewSorted, viewStridescheckShape, checkShape, columns, rows, size, slices, toStringShortensureCapacity, trimToSizeclonepublic DenseObjectMatrix3D(Object[][][] values)
The values are copied. So subsequent changes in values are not reflected in the matrix, and vice-versa.
values - The values to be filled into the new matrix.IllegalArgumentException - if for any 1 <= slice < values.length: values[slice].length != values[slice-1].length.IllegalArgumentException - if for any 1 <= row < values[0].length: values[slice][row].length != values[slice][row-1].length.public DenseObjectMatrix3D(int slices,
int rows,
int columns)
slices - the number of slices the matrix shall have.rows - the number of rows the matrix shall have.columns - the number of columns the matrix shall have.IllegalArgumentException - if (Object)slices*columns*rows > Integer.MAX_VALUE.IllegalArgumentException - if slices<0 || rows<0 || columns<0.public ObjectMatrix3D assign(Object[][][] values)
The values are copied. So subsequent changes in values are not reflected in the matrix, and vice-versa.
assign in class ObjectMatrix3Dvalues - the values to be filled into the cells.IllegalArgumentException - if values.length != slices() || for any 0 <= slice < slices(): values[slice].length != rows().IllegalArgumentException - if for any 0 <= column < columns(): values[slice][row].length != columns().public ObjectMatrix3D assign(ObjectMatrix3D source)
assign in class ObjectMatrix3Dsource - the source matrix to copy from (may be identical to the receiver).IllegalArgumentException - if slices() != source.slices() || rows() != source.rows() || columns() != source.columns()public Object getQuick(int slice, int row, int column)
Provided with invalid parameters this method may return invalid objects without throwing any exception. You should only use this method when you are absolutely sure that the coordinate is within bounds. Precondition (unchecked): slice<0 || slice>=slices() || row<0 || row>=rows() || column<0 || column>=column().
getQuick in class ObjectMatrix3Dslice - the index of the slice-coordinate.row - the index of the row-coordinate.column - the index of the column-coordinate.public ObjectMatrix3D like(int slices, int rows, int columns)
like in class ObjectMatrix3Dslices - the number of slices the matrix shall have.rows - the number of rows the matrix shall have.columns - the number of columns the matrix shall have.public void setQuick(int slice,
int row,
int column,
Object value)
Provided with invalid parameters this method may access illegal indexes without throwing any exception. You should only use this method when you are absolutely sure that the coordinate is within bounds. Precondition (unchecked): slice<0 || slice>=slices() || row<0 || row>=rows() || column<0 || column>=column().
setQuick in class ObjectMatrix3Dslice - the index of the slice-coordinate.row - the index of the row-coordinate.column - the index of the column-coordinate.value - the value to be filled into the specified cell.Jas4pp 1.5 © Java Analysis Studio for Particle Physics